[DeTomaso] Sold on BAT for $104,000

Daniel C Jones daniel.c.jones2 at gmail.com
Wed Jun 13 15:10:33 EDT 2018


> Interesting valve size for 4V heads, 2.03 and 1.655?
> Kinda questions the rest of the technical data?

Lots of Panteras have those heads.  The D3ZE open chamber castings used in
1973 and 1974 had large 4V ports but smaller 2V valves (and correspondingly
smaller bowls).  It was part of the effort to offset the loss in low end
when the compression ratio was reduced.  Both of my 1974 Pantera engines
had both the small valve open chamber 4V heads and dished pistons.  Note
the Sealed Power 7049P pistons are a domed design which offsets the
compression loss due to open chamber heads.

Dan Jones
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   > Interesting valve size for 4V heads, 2.03 and 1.655?
   > Kinda questions the rest of the technical data?
   Lots of Panteras have those heads.A  The D3ZE open chamber castings
   used in 1973 and 1974 had large 4V ports but smaller 2V valves (and
   correspondingly smaller bowls).A  It was part of the effort to offset
   the loss in low end when the compression ratio was reduced.A  Both of
   my 1974 Pantera engines had both the small valve open chamber 4V heads
   and dished pistons.A  Note the Sealed Power 7049P pistons are a domed
   design which offsets the compression loss due to open chamber heads.
   Dan Jones


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